A new genus and new species of freshwater Chaetonotidae (Gastrotricha: Chaetonotida) from Brazil with phylogenetic position inferred from nuclear and mitochondrial DNA sequences

Autor(es)

Garraffoni, Andre R. S. ; Araujo, Thiago Q. ; Lourenco, Anete P. ; Guidi, Loretta ; Balsamo, Maria

• Tipo de documento: Artigo Científico
• Fonte: SYSTEMATICS AND BIODIVERSITY; v. 15, n. 1, p. 49-62, 2017.
• Citações Web of Science: 6

Resumo

Most studies of South American freshwater Gastrotricha have focused on the inland waters of Brazil including SAo Paulo State, Mato Grosso do Sul State, and Para State. In this paper, we describe a new genus and species, Cephalionotus kisielewskii gen. et. sp. nov. (Chaetonotida, Chaetonotidae), from Minas Gerais State using morphological data and DNA sequence data (18S rDNA and COI genes). The new genus contains a single psammic species collected from high altitude streams. Cephalionotus gen. nov. exhibits a set of autapomorphic characters that easily distinguish it from all other genera of Chaetonotida: extremely large cephalion and hypostomium that completely cover the dorsal and ventral sides of the head, respectively; a single pair of pleurae; peculiar shape and arrangement of dorsal and ventral scales in the posterior trunk region; one paired, very large, keeled scale at the ventral posterior end; and very long adhesive tubes divided into three parts. Affinity of Cephalionotus kisielewskii gen. et sp. nov. with other Chaetonotida (Paucitubulatina) is discussed from morphological and molecular perspectives.http://zoobank.org/urn:lsid:zoobank.org:pub:5E324696-AB33-4 2C2-A27A-609B1983D540 (AU)

• Processo FAPESP: 14/23856-0 - Reconstrução filogenética de Gastrotricha baseada em dados moleculares e morfológicos
• Beneficiário: André Rinaldo Senna Garraffoni
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Jovens Pesquisadores